Department of Astronomy, Graduate School of Science, The University of Tokyo : Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS) : Department of Physics, School of Science and Engineering, Kwansei Gakuin UniversityDepartment of Physics, School of Science and Engineering, Kwansei Gakuin University東京大学 : 宇宙航空研究開発機構宇宙科学研究所(JAXA)(ISAS) : 関西学院大学関西学院大学